Publication

Scalable hybrid laser integration via microtransfer printing for silicon photonic platforms

2026

Abstract

We demonstrate micro-transfer printing (μTP) as a scalable solution for integrating reflective semiconductor optical amplifiers (RSOAs) onto silicon nitride (SiN) platforms for fully-integrated hybrid external cavity lasers. Using high-Q side-coupled Fabry-Pérot cavities as resonant reflectors in the external cavity, we achieve high extinction distinct wavelengths across SC-FP resonances within the DBR stopband. The transfer-printed RSOAs provide broadband gain enabling controllable laser wavelength emission across the C-band, establishing μTP as a transformative technology for compact and efficient hybrid photonic integration.

Official source

https://infoscience.epfl.ch/entities/publication/fb65f9b7-953a-4414-a230-9764692b64e3

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fb65f9b7-953a-4414-a230-9764692b64e3

About this result

Related concepts (32)

Photonic integrated circuit

A photonic integrated circuit (PIC) or integrated optical circuit is a microchip containing two or more photonic components which form a functioning circuit. This technology detects, generates, transports, and processes light. Photonic integrated circuits utilize photons (or particles of light) as opposed to electrons that are utilized by electronic integrated circuits. The major difference between the two is that a photonic integrated circuit provides functions for information signals imposed on optical wavelengths typically in the visible spectrum or near infrared (850–1650 nm).

Silicon photonics

Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).

Silicon nitride

Silicon nitride is a chemical compound of the elements silicon and nitrogen. Si3N4 (Trisilicon tetranitride) is the most thermodynamically stable and commercially important of the silicon nitrides, and the term ′′Silicon nitride′′ commonly refers to this specific composition. It is a white, high-melting-point solid that is relatively chemically inert, being attacked by dilute HF and hot H3PO4. It is very hard (8.5 on the mohs scale). It has a high thermal stability with strong optical nonlinearities for all-optical applications.

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Scalable hybrid laser integration via microtransfer printing for silicon photonic platforms

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